openwrt/target/linux/bcm27xx/patches-5.15/950-0005-drm-vc4-hdmi-Raise-the-maximum-clock-rate.patch
Álvaro Fernández Rojas 20ea6adbf1 bcm27xx: add support for linux v5.15
Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2022-05-17 15:11:22 +02:00

32 lines
1.2 KiB
Diff

From f818ed9b9033ef7fbe45a7f5e2fc8c0d0cfe8c1d Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Mon, 25 Oct 2021 17:29:01 +0200
Subject: [PATCH] drm/vc4: hdmi: Raise the maximum clock rate
Now that we have the infrastructure in place, we can raise the maximum
pixel rate we can reach for HDMI0 on the BCM2711.
HDMI1 is left untouched since its pixelvalve has a smaller FIFO and
would need a clock faster than what we can provide to support the same
modes.
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20211025152903.1088803-9-maxime@cerno.tech
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -2377,7 +2377,7 @@ static const struct vc4_hdmi_variant bcm
.encoder_type = VC4_ENCODER_TYPE_HDMI0,
.debugfs_name = "hdmi0_regs",
.card_name = "vc4-hdmi-0",
- .max_pixel_clock = HDMI_14_MAX_TMDS_CLK,
+ .max_pixel_clock = 600000000,
.registers = vc5_hdmi_hdmi0_fields,
.num_registers = ARRAY_SIZE(vc5_hdmi_hdmi0_fields),
.phy_lane_mapping = {